NEET Physics Resistance & Resistivity MCQ Question
Which of the following statements about resistance and resistivity is correct?
Resistivity increases with temperature in metals.
The resistivity of insulators is much lower than that of metals.
Semiconductors have resistivities that decrease with increasing temperature.
Resistance is directly proportional to the length of a conductor in all materials.
Correct Answer
Detailed Explanation
Semiconductors exhibit a decrease in resistivity with increasing temperature, as stated in the NCERT context. This is contrary to the behavior of metals and insulators.
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